Features 1、Basic Specifications: 316 stainless steel rotating squares fixed buckle, the width of the buckle is 8mm, the inner diameter of the ring is Φ20mm, and the size of the base is 50 x 50mm. 2、316 Stainless Steel: The use of solids 316 stainless steel, compared with ordinary stainless steel, and is more wear resistant, rustproof and corrosion resistant. 3、Higher Strength: Very suitable for long term outdoor work in the ocean, solids stainless steel structure provides higher strength. 4、Highly Polished Surface: This is a buckle with a highly polished surface, the surface is smooth and burr free. 5、Application: Can be used for various fasteners, quick links and links, mainly for boat bolts, roof beams, ceiling fan hooks and wood. Very suitable for suspened training belt, yoga swing hammock, boat and ship deck hardware. Specification Item Type: Ceiling Mount Hook Material: 316 Stainless Steel Purpose: Suitable for Suspened Training Belt, Yoga Swing Hammock, Boat and Ship Deck Hardware Buckle Ring Width: Approx. 8mm / 0.31in Inner Diameter of Ring: Approx. Φ20mm / 0.80in Base Size: Approx. 50 x 50mm / 2.00 x 2.00in Installation Aperture: Approx. Φ5.5mm / 0.22in Package List 2 x Buckle Ring